Roofing nail



July 21, 1936. E. M. TUCKER ROOFING NAIL Filed May 22, 1935 M Mr. f fl lINVENTOR. DGAR '/W. W10/(ER Patented July 2l, 1936 'r Prier AppiitionMay 22,

This invention relates to improvements in roofing nails.

The general object of the invention is to provide a securing device suchas a nail or screw which includes novel means for sealing around theshank thereof adjacent the point where it enters the article into whichit is driven.

A further object of the invention is to provide a securing deviceincluding a shank having a novel frustro-conical skirt thereon whichwhen the device is driven through plastic material forces the materialup into the skirt around the shank and causes the material within theskirt to raise above the surface of the material exterior to the skirt.

Other objects and the advantages of my invention will be apparent fromthe following description taken in connection with the accompanyingdrawing wherein:

Fig. 1 is aside elevation of my improved nail. 2 isa top plane view ofthe nail shown in Fig. 3 is a bottom plane view of the nail.

Fig. 4 is an enlarged fragmentary section taken on line d-t of Fig. 1.

Fig. 5 is an enlarged fragmentary view of the nail shown in Fig. 1,partly in section, showing the nail being driven through a layer ofcomposition roof coating and into the roof deck.

Fig. 6 is a view similar to Fig. 5 showing the nail fully driven home.

Fig. '7,is a viewsimilar to Fig. 5 showing a slightly modied form of myinvention and showing the nail being driven through composition shinglesinto a roof deck.

Fig. 8 is a view similar to Fig. 'I showing the nail fully driven home.

Fig. 9 is a view similar to Fig. 1 showing the invention in the form ofa log screw.

Fig. 10 is a view similar to Fig. 1 showing the invention in the form ofa bolt, and

Fig. 11 is a side view, partly in section, of another modified form ofmy invention.

Referring to the drawing by reference characters I have indicated myimproved securing device generally at Ill. As shown the device I6includes a shank I2 which is pointed at one end` as at I3 and has anintegral enlarged head Il thereon at the opposite end. Spaoed from thehead Il the device includes a frustro-conical skirt I5 which is integralwith shank I2 and is positioned with the base of the cone towards thepoint I3. The skirt I5 includes an inner surface I6 which convergestowards the head IB and the base surface I1 is inclined convergently1935, Serial No. 22,741

(CH. 19H3) towards the shank to form a sharp lower edge it.

In Figs. 5 and 6 I have shown the device I IJ as used as a tile nali forfastening a tile holding wire thereto. In these figures I have indicateda wood roof deck at i@ and a plastic composition 5 the deck the skirtedge I3 bites into the compo- 10 sition coating 2d and the inclinedsurface I6 of the skirt compresses the composition material 2D withinthe skirt and forces it tightly against the shank I2 and also causes theplastic coating to flow upward until when the nail is fully driven l5home as shown in Fig. 6 the composition material within the skirt I5 hasbeen forced upward above the surface of the composition materialexterior to the shrt IE. Thus a very secure water tight seal is formedaround the shank i2 of the 20 nail. The material at 2D' is higher thanthe top of the plastic and even if the nail is slightly withdrawn watercannot seep around the nail into the roof.

In Fim. 'I and 8 I have indicated a slightly 25 modiiied form of myinvention generally at 2|. The nail 2l is primarily for securingcomposition shingles to a roof deck and is similar to the nail I@ exceptthat the shank portion above the skirt and the head is omitted. Portionsof the device 30 2| similar to the device I@ have been indicated bysimilarly primed reference numerals.

In Figs. 'l and 8 I have shown a wood roof deck at 22 and overlappingcomposition shingles at 23. In Fig. l the nail 2| is shown as driveninto 35 the roof deck 22 until the edge I8' of the skirt i5' barelyengages the upper surface of the top shingle. As the nail 2l is drivenfurther into the roof deck the skirt edge I8' bites into the top shingleand the inclined surface I8' of the skirt 40 compresses the portion ofthe composition shingle within the skirt and forces it tightly againstthe shank I2' and upward. When it is fully driven home as shown in Fig.8 the portion of the shingle within the skirt I5' has been forced upwardabove 45 the surface of the portion of the shingle exterior to the skirti5' thus forming a water tight seal around the shank i2'.

In Fig. 9 I have indicated a securing device generally at 24 which issimilar to the nail I0 and 50 similar portions thereof are indicated bysimilarly double primed reference numerals. In the device 2l a portionof the shank I2" is tapered and is provided with threading 25 and thehead IB" has a slot 2l therein. 55

In Fig. 10 I have indicated a securing device generally at 21 which issimilar to the device I0 and similar portions thereof are indicated bysimilarly a primed reference numerals. In the device 21, a portion ofthe shank l2n is provided with threading 28 to receive a nut 29 and thehead I4B is formed hexagonal as a bolt'head Vindicated at 30.

In Fig. 11 I have indicated a modifled form of securing device generallyat 3i. As shown the device 3l includes a shank 32 which is pointed atone end as at 33 and adjacent the opposite end has an annular groove 34therein. Positioned on the shank 32 I provide a cap member 35 which hasa recess 36 therein in which the shank 32 is positioned.

The cap 35 includes an enlarged head portion 31 and a frustro-conicalskirt portion 38 which is positioned with the base of the cone towardsthe shank point 33. 'I'he skirt 38 ls formed similar to the previouslydescribed skirt i5 and includes an inner surface 39 which convergestowards the head 34 and the base surface 40 is inclined convergentlytowards the shank point to form a sharp lower edge 4|. After the cap 35iis positioned on the shank 32 the material thereof is swedged into theshank groove 34 as indicated at 42. The shank 32 may be formed as a logscrew similar to the device 24 or as a bolt similar to the device 21.

In .use the device 3| functions in the same manner as previouslydescribed in connection with the device I0.

Where the device is used on a roof not having plastic material thereonthe lower end of theshank of the device may be dipped in a containerhaving plastic material therein such as a oomposition comprisingasbestos fibers, slate dust, petroleum thinner and liquid asphalt. Whenthe device is extracted from the plastic material, some of the materialadheresv to the shank of the device as indicated at 45 in Fig. 1.Thereafter when the device is driven into the roof the material 45remains on the roof surface and is forced up into the conical skirt ofthe device to form a water tight seal around theshank of the device.

at the position where the device is to go into the roof as indicated at46 in Fig. 9. The shank of the device then passes through the plasticmaterial and when skirt portion of the device engages the plasticmaterial it is forced up into the skirt to form a fluid tight sealaround the shank of the device.

From the foregoing description it will be apparent that I have provideda novel securing device which is simple in construction and highlyeflicient in use.

Having thus described my invention, I claim: 1. 'Ihe combination of asurface having a fiexible material on its outer face and a nail, saidnail including a shank portion and a frusto-co'nlcal, rigid imperiorateskirt portion integral with said shank, said skirt portion having asharpened lower edge, said skirt portion being downwardly directed andhaving its lower edge constructed and arranged to be driven into theflexible material of said outer face, and to form a depression thereinencircling the lower edge of the skirt, the rigidity of said skirtmaintaining the skirt undistorted, said nexible material entering saidskirt and being forced convergently upwardly within the skirt to alocation above the normal surface of the iiexible material to form anupwardly pro- ,iectingA bead which surrounds the shank within the skirt,said flexible material within the skirt engagingv the lower portion ofthe inner wall of the skirt to form a seal against the inner wall.-

2. In a nail for use in securing flexible material upon the outersurface of a roof, a shank portion having a sharpened end and having anintegral frusta-conical, imperforate skirt portion of rigidg terial willbe forced up into the skirt to form a seal.

EDGAR M. TUCKER.

